have a look at your bulbs, if your hi and lo bean are on the same bulb then you'll need H4's i'm pretty sure scoobys are H4/2 HID
Hids arent really illegal.. it is an mot failure as they dont give off the right pattern but they are allowed if you have headlight washers (i dont understand why??)
best Hids to go for are something like 6000k or even 8000k i wouldnt go any higher cos then your just asking to be pulled over